Punch.



N 657,800 Patented Sept. ll, I900. C. P. VER

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n filed May 29, 1900 (No Model.)

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Patented Sept. II, 1900.

2 Sheets$heet 2.

P. VERNIEH.

PUNCH.

(Application filed May 29, 1900.)

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i l r 0 a w W a i Z r 7 Lil UNlTED STATES PATENT OFFICE.

CHARLES P. VERNIER, OF HUDSON, MICHIGAN.

PUNCH.

SPECIFICATION forming part Of Letters Patent No. 657,800, dated September 11, 1900.

Application filed May 29, 1900. Serial No. 18,447. (No model.)

To wZZ whom it may concern:

Beit known that 1, CHARLES P. VERNIER, a citizen of the United States, residing at End son, in the county of Lenawee and State of Michigan, have invented new and useful Improvements in Punches, of which the following is a specification.

This invention relates to new and useful improvements in punches especially adapted for punching rivet-holes in boiler-iron, 850.; and its primary object is to provide a device of this character which is simple and durable in construct-ion and eifective in use.

A further object is to provide means of novel construction whereby the punch will be given a positive forward and backward movement.

Another object is to provide a stripper attachment for the device adapted to operate in connection with the punch, said punch and stripper both receiving motion from the same handle.

To these ends the invention consists in the novel construction and combination of parts hereinafter more fully described and claimed, and illustrated in the accompanying drawings, showing the preferred form of my invention, and in which- Figure 1 is a side elevation of the device. Fig. 2 is a central longitudinal section therethrough. Fig. 3 is a central horizontal section therethrough. Fig. 4 is a vertical transverse section through the device, showing the receiving-die and its holderin elevation. Fig. 5 is a detail view of the stripper detached, and Figs. 6 and 7 are sections through modified forms of dies which may be used in the device.

Referring to said figures by numerals of reference, 1 is a casting of suitable size and form and provided with a base 2. This casting is provided within its rear edge with a recess 3, within which is mounted an end 4 of an arm or handle 5, said end being loosely mounted upon a suitable pivot-pin 6, which extends through the walls of the recess 3 and is held in position therein by means of nuts 7, as shown, or in any other suitable manner. Arms 8 are secured to this pin or bolt 6 at either-side of the casting 1 and are secured at their outer ends to opposite sides of a yoke 9, which straddles the handle 5 and permits of a longitudinal movement of said handle therein. The ends of this yoke 9 are closed and provided with threaded passages to receive set-screws 10, adapted to limit the movement of the handle therebetween. The inner end of each arm 8 is suitably secured to a cam 11, having a slot 12 therein engaged by an angle-plate 13, secured to one end of one of the arms 14 of a stripper. These arms are slotted, as at 15, said slots receiving guidepins 16, which project from the sides of the casting. This stripper extends transversely of the casting 1 between the front face thereof and the inner edge of the downwardly-extending arm 17, formed integral with the casting. A recess 18 is provided within the intermediate portion 19 of the stripper, the walls of said recess adapted to inclose the punch 20 of the device. This punch is of anydesired form and is fastened, as by means of a set-screw 21, within a plunger 22, slidably mounted within a horizontallyextending passage 23, communicating with the recess 3. Inwardly-bent arms 24 are secured to this plunger at opposite sides of the rear end thereof and project into a slot 25, formed within the end 4 of the handle and arranged eccentrically to the pivot thereof.

The arm 17 of the casting is provided with a horizontally-extending passage 26, adapted to register with a similar passage formed within the receiving-die 27 of the punch, said die being secured within a frame 28 by means of a set-screw 29 or in other suitable manner. This frame is secured to the arm by means of bolts 30.

A screw 31 extends vertically through the casting 1 to a point above the outer face of the die 27 and serves as a gage for the iron to be punched.

The device is normally in the position shown in Figs. 1, 2, and 3, and when it is desired to place a perforation within the sheet metal the handle 5 is raised and will, as is obvious, immediately retract the plunger by reason of the plates 24 thereof sliding within the eccentric slot 25. As soon as the handle in its upward movement contacts with the upper set-screw 10 of the yoke 9 said yoke will be carried therewith, causing the slots 12 of the eccentrics 11 to retract the stripper. This backward movement of the punch and stripper will then be continued to the end of the upward stroke of the handle. The metal to be perforated is then placer] against the die 27 and the stage 31 and held in such position in any desired manner. Handle 5 is then forced down, the periphery of the eccentric end 4thereof driving the plunger forward and forcing the punch through the metal and into the die 27. It will be seen that the stripper will not.- be carried forward by the handle until the same contacts with the lower screw 10 of the yoke 9. The same will then' be pressed firmly against the metal and will be retained thereagainst until after the punch has been withdrawn during the upward stroke of the handle.

While this invention is especially adapted for punching sheet metal, it may also be employed for riveting by substituting for the punch 20 and the die 27 the two dies 32 and 33. (Shown in Figs. 6 and '7.)

By employing a stripper such as is herein shown and described it will be seen that the metal will at all times be firmly held in position until after the withdrawal of the punch therefrom.

In the foregoing description I have shown the preferred form of my invention; but I do not limit myself thereto, as I am aware that modifications may be made therein without departing from the spirit or sacrificing any of the advantages thereof, and I therefore reserve the right to make all such changes as fairly fall within the scope of myinvention.

I claim 1. The combination with a casting, of a handle pivoted therein, a plunger operated thereby, a yoke inclosing the handle, and a stripper operated from said yoke.

2. The combination with a casting, of a handle pivoted therein, a plunger operated thereby, a yoke inclosing the handle, an eccentric pivoted to the casting and secured to the yoke, and astripper operated from the eccentric.

3. The combination with a casting, of a handle pivoted therein and having an eccentric slot, a plunger slidably mounted within the casting, an arm secured thereto and projecting into the slot, an eccentric pivoted to the casting and having a slot therein, a stripper slidably mounted upon the casting and engaging the groove of said eccentric, and a yoke inclosing the handle and secured to the eccentric of the stripper.

4. The combination with a casting, of a handle pivoted therein and having an eccentric slot, a plunger slidably mounted within the casting, arms thereto engaging the eccentric slot of the handle, pins extending from the casting, a stripper slidably mounted thereon, eccentrics pivoted to the casting and having slots therein, arms secured to the stripper and engaging said grooves, a yoke inclosing the handle, and arms connecting said yoke and the eccentric.

5. The combination with a casting having a recess therein and a downwardly-extending arm; of a handle pivotally mounted within the recess and having an eccentric slot, a plunger slidably mounted Within the casting, arms thereto engaging the slot of the handle, a cam pivoted upon each side of the casting and having an eccentric slot therein, a stripper slidably mounted upon the casting, an-

gle-plates thereon engaging the slots of the cams, and means for imparting motion to the cams and stripper from the handle when the same is near the limits of its movements.

In testimony whereof I affix my signature in presence of two Witnesses.

CHARLES P. VERNIER. Witnesses:

JAMES B. THORN, CHESTER C. PEACE. 

